# US 9,750,521 B2 · Ultrasonic blade overmold > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,750,521 B2 - Document ID: US9750521B2 - Status: Granted - Kind: B2 - Application number: 14/337,508 - Filed: 2014-07-22 - Published: 2016-01-28 - Granted: 2017-09-05 - Earliest claimed: 2014-07-22 - Assignees: Ethicon, Inc. - Applicants: Ethicon Endo-Surgery, Inc. - Inventors: Michael R. Lamping; David A. Witt; Matthew D. Holcomb; Nabeel M. Jadeed - Web page: https://patentgrep.com/patent/US9750521B2 ## CPC - A61B 17/320068: {using mechanical vibrations, e.g. ultrasonic (A61B17/22012 takes precedence; dental tooth drilling devices operated by vibration A61C3/03; removing intra-ocular material using mechanical vibrations A61F9/00745)} - A61B 2017/00526: {Methods of manufacturing} - A61B 2017/320071: {with articulating means for working tip} - A61B 2017/320088: {with acoustic insulation, e.g. elements for damping vibrations between horn and surrounding sheath} - A61B 2017/320089: {node location} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract An ultrasonic instrument comprises an ultrasonic transducer, an acoustic waveguide, and an ultrasonic blade. The acoustic waveguide comprises a bore extending through the waveguide, an anchor pin, and an acoustic isolator. The anchor pin is insertable through the bore and is operable to longitudinally anchor the acoustic waveguide relative to the ultrasonic instrument. The acoustic isolator is radially disposed about the acoustic waveguide and is operable to acoustically isolate the acoustic waveguide from the ultrasonic instrument. The acoustic isolator comprises an opening extending through the isolator. The opening is configured to receive the anchor pin. The ultrasonic blade is in acoustic communication with the acoustic waveguide such that the ultrasonic transducer is operable to drive the ultrasonic blade to vibrate ultrasonically via the acoustic waveguide. ## Claims ### Claim 1 An ultrasonic instrument comprising: (a) an ultrasonic transducer; (b) an acoustic waveguide in acoustic communication with the ultrasonic transducer, wherein the acoustic waveguide defines a longitudinal axis, wherein the acoustic waveguide comprises: (i) a bore extending transversely through the waveguide, wherein the bore defines a bore opening diameter, (ii) an anchor pin, wherein the anchor pin is insertable through the bore and is operable to secure the acoustic waveguide relative to the ultrasonic instrument, and (iii) an acoustic isolator, wherein the acoustic isolator is disposed about the acoustic waveguide and is operable to acoustically isolate the acoustic waveguide, wherein the acoustic isolator comprises a first opening extending through the isolator, wherein the opening is configured to receive the anchor pin, wherein the first opening defines a first opening diameter, wherein the first opening diameter is greater than the bore opening diameter; and (c) an ultrasonic blade in acoustic communication with the acoustic waveguide such that the ultrasonic transducer is operable to drive the ultrasonic blade to vibrate ultrasonically via the acoustic waveguide. ### Claim 2 (depends on 1) The ultrasonic instrument of claim 1, wherein the acoustic isolator comprises an elastomeric material. ### Claim 3 (depends on 1) The ultrasonic instrument of claim 1, wherein the acoustic isolator comprises silicone. ### Claim 4 (depends on 1) The ultrasonic instrument of claim 1, wherein the acoustic isolator is positioned at an acoustic node along the longitudinal length of the acoustic waveguide. ### Claim 5 (depends on 4) The ultrasonic instrument of claim 4, wherein the acoustic isolator, the bore, and the pin are all disposed at the same node along the longitudinal axis of the acoustic waveguide. ### Claim 6 (depends on 1) The ultrasonic instrument of claim 1, wherein the waveguide further comprises an o-ring positioned at a nodal position along the longitudinal axis of the acoustic waveguide, wherein the o-ring is positioned distally of the acoustic isolator. ### Claim 7 (depends on 6) The ultrasonic instrument of claim 6, wherein the o-ring is configured to acoustically isolate the acoustic waveguide. ### Claim 8 (depends on 1) The ultrasonic instrument of claim 1, wherein the anchor pin of the acoustic waveguide is oriented orthogonally relative to the longitudinal axis of the acoustic waveguide. ### Claim 9 (depends on 1) The ultrasonic instrument of claim 1, wherein the bore of the acoustic waveguide is chamfered, wherein the acoustic isolator abuts a portion of the chamfer. ### Claim 10 (depends on 1) The ultrasonic instrument of claim 1, wherein the first opening of the acoustic isolator is aligned over the bore of the acoustic waveguide. ### Claim 11 (depends on 1) The ultrasonic instrument of claim 1, wherein the acoustic isolator further comprises a second opening. ### Claim 12 (depends on 11) The ultrasonic instrument of claim 11, wherein the anchor pin is insertable into the first opening of the acoustic isolator and the acoustic waveguide extends through the second opening of the acoustic isolator. ### Claim 13 (depends on 11) The ultrasonic instrument of claim 11, wherein the second opening is perpendicular to the first opening. ### Claim 14 (depends on 1) The ultrasonic instrument of claim 1, wherein the acoustic isolator extends outwardly from the waveguide such that the acoustic isolator has a substantially uniform thickness. ### Claim 15 An ultrasonic instrument comprising: (a) an ultrasonic transducer, wherein the ultrasonic transducer is operable to convert electrical power into ultrasonic vibrations; (b) an acoustic waveguide in acoustic communication with the ultrasonic transducer, wherein the acoustic waveguide defines a first longitudinal axis, wherein the acoustic waveguide comprises: (i) a bore extending through the acoustic waveguide, wherein the bore defines a second axis, (ii) an anchor pin configured to be received within the bore, and (iii) an acoustic isolator, wherein the acoustic isolator surrounds a portion of the acoustic waveguide, wherein the acoustic isolator comprises an opening extending along the first longitudinal axis from a first edge of the acoustic isolator to a second edge of the acoustic isolator, wherein the first edge is concave toward the second axis, wherein the acoustic isolator includes a pair of openings oriented about the second axis of the bore, wherein at least a portion of the first edge is disposed between the pair of openings; and (c) an ultrasonic blade in acoustic communication with the acoustic waveguide such that the ultrasonic transducer is operable to drive the ultrasonic blade to vibrate ultrasonically via the acoustic waveguide. ### Claim 16 (depends on 15) The ultrasonic instrument of claim 15, wherein the acoustic isolator is formed of an elastomeric material. ### Claim 17 (depends on 15) The ultrasonic instrument of claim 15, wherein the pair of openings of the acoustic isolator are aligned with the bore of the acoustic waveguide such that the anchor pin is insertable through the pair of openings in the acoustic isolator and into the bore of the acoustic waveguide. ### Claim 18 (depends on 15) The ultrasonic instrument of claim 15, wherein the bore, the anchor pin, and the acoustic isolator are positioned at a nodal position relative to the first longitudinal axis of the acoustic waveguide. ### Claim 19 An ultrasonic instrument comprising: (a) an ultrasonic transducer; (b) an acoustic waveguide in acoustic communication with the ultrasonic transducer, wherein the acoustic waveguide defines a longitudinal axis, wherein the acoustic waveguide comprises: (i) a bore extending transversely through the waveguide, (ii) an anchor pin, wherein the anchor pin is insertable through the bore and is operable to secure the acoustic waveguide relative to the ultrasonic instrument, wherein the anchor pin includes an overmold layer thereon, and (iii) an acoustic isolator, wherein the acoustic isolator is disposed about the acoustic waveguide, wherein the acoustic isolator comprises a first opening extending through the isolator, wherein the opening is configured to receive the anchor pin therethrough, wherein the acoustic isolator is spaced apart from the overmold layer of the anchor pin when the anchor pin is disposed in the bore; and (c) an ultrasonic blade in acoustic communication with the acoustic waveguide such that the ultrasonic transducer is operable to drive the ultrasonic blade to vibrate ultrasonically via the acoustic waveguide. ### Claim 20 (depends on 19) The ultrasonic instrument of claim 19, further comprising: a mating component, wherein the mating component is sized to receive the acoustic isolator therein, wherein the mating component has an interior surface; and wherein the acoustic isolator is sized to uniformly abut the interior surface.